The Embedded Rust Book

Here are the installation commands for a few Linux distributions.

Packages

• Ubuntu 18.04 or newer / Debian stretch or newer

sudo apt install gdb-multiarch openocd qemu-system-arm

• Ubuntu 14.04 and 16.04

sudo apt install gdb-arm-none-eabi openocd qemu-system-arm

• Fedora 27 or newer

sudo dnf install arm-none-eabi-gdb openocd qemu-system-arm

• Arch Linux

sudo pacman -S arm-none-eabi-gdb qemu-arch-extra openocd

udev rules

This rule lets you use OpenOCD with the Discovery board without root privilege.

Create the file /etc/udev/rules.d/70-st-link.rules with the contents shown below.

# STM32F3DISCOVERY rev A/B - ST-LINK/V2

ATTRS{idVendor}=="0483", ATTRS{idProduct}=="3748", TAG+="uaccess"

# STM32F3DISCOVERY rev C+ - ST-LINK/V2-1

ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374b", TAG+="uaccess"

Then reload all the udev rules with:

sudo udevadm control --reload-rules

If you had the board plugged to your laptop, unplug it and then plug it again.

You can check the permissions by running this command:

lsusb

Which should show something like

(..)

Bus 001 Device 018: ID 0483:374b STMicroelectronics ST-LINK/V2.1

(..)

Take note of the bus and device numbers. Use those numbers to create a path like /dev/bus/usb//. Then use this path like so:

ls -l /dev/bus/usb/001/018

crw-------+ 1 root root 189, 17 Sep 13 12:34 /dev/bus/usb/001/018

getfacl /dev/bus/usb/001/018 | grep user

user::rw-

user:you:rw-

The + appended to permissions indicates the existence of an extended permission. The getfacl command tells the user you can make use of this device.

Now, go to the next section.